package com.hkbigdata.transform;

import com.hkbigdata.bean.WaterSensor;
import org.apache.flink.streaming.api.datastream.DataStream;
import org.apache.flink.streaming.api.datastream.DataStreamSource;
import org.apache.flink.streaming.api.datastream.KeyedStream;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;

import java.util.Arrays;
import java.util.List;

/**
 * @author liuanbo
 * @creat 2024-04-12-10:56
 * @see 2194550857@qq.com
 */
public class Flink08_TransForm_Aggregate_Anonymous {
    public static void main(String[] args) throws Exception {
        StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
        env.setParallelism(1);

/*        DataStreamSource<Integer> integerDataStreamSource = env
                .fromElements(1, 2, 3, 4, 5);

        KeyedStream<Integer, String> integerStringKeyedStream = integerDataStreamSource.keyBy(data -> data % 2 == 0 ? "偶数" : "奇数");

        integerStringKeyedStream.sum(0).print("sum");
        integerStringKeyedStream.max(0).print("max");
        integerStringKeyedStream.min(0).print("min");*/

        List<WaterSensor> waterSensors = Arrays.asList(
                new WaterSensor("ws_001", 1607527992000L, 20.0),
                new WaterSensor("ws_001", 1607527992001L, 22.2),
                new WaterSensor("ws_001", 1607527992002L, 33.0),
                new WaterSensor("ws_002", 1607527992003L, 44.0),
                new WaterSensor("ws_002", 1607527992004L, 22.0),
                new WaterSensor("ws_002", 1607527992001L, 50.0)
        );

        env.fromCollection(waterSensors)
                .keyBy(WaterSensor::getId)
                .sum("vc").print();

        env.execute();


    }
}
